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CLAVATA signaling pathway genes modulating flowering time and flower number in chickpea

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Title CLAVATA signaling pathway genes modulating flowering time and flower number in chickpea
 
Creator Basu, Udita
Narnoliya, Laxmi
Srivastava, Rishi
Sharma, Akash
Bajaj, Deepak
Daware, Anurag
Thakro, Virevol
Malik, Naveen
Upadhyaya, Hari D.
Tripathi, Shailesh
Hegde, V. S.
Tyagi, Akhilesh K.
Parida, Swarup K.
 
Subject CLAVATA
signaling pathway
chickpea
fowering time
fower number
genes modulating
 
Description Accepted date: 20 March 2019
Unraveling the genetic components involved in CLAVATA (CLV) signaling is crucial for modulating important
shoot apical meristem (SAM) characteristics and ultimately regulating diverse SAM-regulated agromorphological traits in
crop plants. A genome-wide scan identifed 142 CLV1-, 28 CLV2- and 6 CLV3-like genes, and their comprehensive genomic
constitution and phylogenetic relationships were deciphered in chickpea. The QTL/fne mapping and map-based cloning
integrated with high-resolution association analysis identifed SNP loci from CaCLV3_01 gene within a major CaqDTF1.1/
CaqFN1.1 QTL associated with DTF (days to 50% fowering) and FN (fower number) traits in chickpea, which was further
ascertained by quantitative expression profling. Molecular haplotyping of CaCLV3_01 gene, expressed specifcally in SAM,
constituted two major haplotypes that diferentiated the early-DTF and high-FN chickpea accessions from late-DTF and
low-FN. Enhanced accumulation of transcripts of superior CaCLV3_01 gene haplotype and known fowering promoting
genes was observed in the corresponding haplotype-introgressed early-DTF and high-FN near-isogenic lines (NILs) with
narrow SAM width. The superior haplotype-introgressed NILs exhibited early-fowering, high-FN and enhanced seed yield/
productivity without compromising agronomic performance. These delineated molecular signatures can regulate DTF and
FN traits through SAM proliferation and diferentiation and thereby will be useful for translational genomic study to develop
early-fowering cultivars with enhanced yield/productivity.
The financial support provided by (Grant No. 102/IFD/SAN/2161/2013-14) the Department of Biotechnology (DBT), Ministry of Science and Technology, Government of India, is acknowledged. UB, LN and VT acknowledge the UGC (University Grants Commission) and DBT for Senior/Junior Research Fellowship awards.
 
Date 2019-04-05T06:41:04Z
2019-04-05T06:41:04Z
2019
 
Type Article
 
Identifier Theoretical and Applied Genetics, 132(7): 2017-2038.
1432-2242
http://223.31.159.10:8080/jspui/handle/123456789/938
https://link.springer.com/article/10.1007%2Fs00122-019-03335-y
https://doi.org/10.1007/s00122-019-03335-y
 
Language en_US
 
Format application/pdf
 
Publisher Springer Nature